Under some circumstances, natural radioactive substances, such as radon gas, can become concentrated and pose a threat to human health.
a. true
b. false
Ans: a. true
Biology & Microbiology
You might also like to view...
Somites arise from
a. endoderm. b. mesoderm. c. ectoderm. d. gastroderm. e. placoderm.
Biology & Microbiology
Which sturcture makes proteins using coded instructions that come from the nucleus?
A. Golgi Apparatus B. mitochondrion C. vacuole D. ribosome
Biology & Microbiology
Which idea is central to the biological species concept?
A. Vicariance B. Sexual selection C. divergent phenotypes D. reproductive isolation E. distinct lineages
Biology & Microbiology
List and explain five types of techniques that can be used to identify unknown microorganisms
What will be an ideal response?
Biology & Microbiology